Programming :: Source Or Dot Command Not Working In Makefile
Apr 5, 2010
I am trying to run a script to setup environment variables and then run other commands in a make file. But the source or the dot operator (shell is bash) does not seem to take any effect as the subsequent command didn't pick the environment up. Do I have to put every lines of the environment setup in the first script into the makefile instead?
sample setenv.sh
#!/bin/sh
export MYDIR=/somedir
sample makefile:
all: source ./setenv.sh
echo $(MYDIR)
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Nov 25, 2010
I'm learning about how to write Makefiles, and am a bit lost at how to run a command in a target depending on the value of a variable.
What I'm trying to do, is run "strip" only if the user is running a given version of a C compiler.
Here's the code:
Code:
$(LUA_T): $(LUA_O) $(LUA_A)
$(CC) -o $@ $(MYLDFLAGS) $(LUA_O) $(LUA_A) $(LIBS)
#FDPIC ELF binaries can be stripped, but not FLAT binaries
$(if($(CROSS),bfin-linux-uclibc-),
$(STRIP) $@
;)
Does someone know the correct way to do this?
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May 7, 2010
in directory a_dir, have a file named a_file.i can type "source a_file" under directory a_dir and execute successfully.but if i write the command to a Makefile under directory b_dir, the "source" function can't be executed well. it will generate some error message like this:
./a_file: line 1: setenv: command not found
./a_file: line 2: setenv: command not found
./a_file: line 3: setenv: command not found
./a_file: line 5: setenv: command not found
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May 17, 2010
Makefile.in a file that is generated by tool, why it is in the source package? I am asking since , when I modified Makefile.am, I need to run automake to update the makefile.in, while I don't think this should be done manually.
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Jan 19, 2010
Where can I find the top command source code... I got it from "http://procps.sourceforge.net/index.html" but it seems for Solaris. where can I get the source code for top commend running on Linux????
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Jan 23, 2009
I just want to see how the command line such as : "cat", "split", "ls"...ect source code ? Are they written in C or other language ? I don't know where to search those?
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Jun 3, 2010
I'm calling a function defined in "uart.c" from "main.c"
But on "make" using cygwin bash, it's giving an error:"Unreferenced function"...
Pls help me to overcome this problem.
If i'm putting the definition of that function in "main.c" itself, its working.
So pls tell me how to write the make file for it?
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Apr 6, 2010
So I've been trying to get GIMP 2.7 installed on my Slackware64 13.0, but I'm having some issues. After some extensive finagling and dependence findings, I got it to configure correctly, however, the make fails with libtool trying to find libgdk_pixbuf-2.0.la:
libtool: link: cannot find the library '..//usr/lib64/pkgconfig/gdk-pixbuf/libgdk_pixbuf-2.0.la' or unhandled argument '..//usr/lib64/pkgconfig/gdk-pixbuf/libgdk_pixbuf-2.0.la'
libgdk_pixbuf-2.0.la is in /usr/lib64/pkgconfig/, but for whatever reason, editing the makefile doesn't change this. (Yes I have the right permissions to edit it). First of all, why is it searching for /usr in the top build directory, and second, why doesn't an edit of the makefile work?
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Nov 19, 2010
This is weird. I have a shell script with no execute rights.$ chmod -x test.shThen I try$ test.shwhich does not work. (I have "." in PATH)When I do$ . test.shit works! I can run the script even though I have no execute rights. Why is that?Another question: If I have a shell script without a hash bang, I still can execute the shell script. Why? What does hash bang do? If there is no hash bang, why is the shell script run? What does the hash bang do
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Oct 3, 2010
I want to load the package madwifi under opensuse from Index of /suse/11.1, but RealPlayer did not function correctly. The reason why I want to use madwifi is that I cannot start my internet with opensuse 11.1 using motherboard from asus with the ethernet adapter from Atheros AR 8121/AR8113 PCI-E Version 1.0.0.5. When I compile the delivered Linux drivers I got the failure message "Makefile:61: Linux kernel source not found". So I decided to take rpm from opensuse within madwifi. How/Where can I get the corrosponding madwifi elsewhere?
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May 31, 2010
I just downloaded slackware 13.1(x86) and i'm trying to compile ndiswrapper-1.56 using the slackbuild from slackbuils.org and i'm getting this error:
Code:
Makefile:535: /usr/src/linux-2.6.33.4/arch/i486/Makefile: No such file or directory
make[2]: *** No rule to make target `/usr/src/linux-2.6.33.4/arch/i486/Makefile'. Stop.
make[1]: *** [modules] Error 2
make: *** [all] Error 2
looks like the folder i486 doesn't exist
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May 19, 2010
I have problems with linking object files.
This is what I get:
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Jul 20, 2010
I want to define _LINUX in my makefile which I would be using in my source code like #if _Linux. I do not want to #define _Linux __linux__ in my source code.
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Oct 8, 2010
at present I compile the same code for different systems (cross compilers)I need to call libs and include paths for the different processors. At present I simply comment out the paths not needed
eg
#INCDIR = -I/cross1/.......
#INCDIR = -I/cross2/.......
[code]....
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Feb 25, 2009
I am a beginner in Linux. Never did any kernel programming in Linux/Windows before. I am now on a project and I am supposed to understand a Linux Device Driver Code. It contains 6 .c files and 1 Makefile.
The make file goes as this:
I have a.c b.c c.c d.c d.c e.c f.c in the director along with the Makefile mentioned.
I am using Fedora Red Hat Linux 32 bit.
How to compile the Makefile.
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Mar 26, 2011
How to create a simple Makefile using C....
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Dec 8, 2009
I'm trying to figure out how Make handles directories.
How can I modify this makefile so it will put all of the .o files in a separate build directory?
Code:
But make ignores this and still puts main.o in the base directory. And if I refer to the build directory in the dependencies for bandit, make complains about "no rule ..."
I want to keep main.cpp in the base directory, all other sources in the src directory, and all object files in the build directory.
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Jan 6, 2010
When I put a "test" target in my Makefile containing
Code:
@echo "CXX= $(CXX)"
it tells me "CXX= g++".
But I have nothing in the Makefile assigning any value to CXX, and as far as I can tell I have no CXX environment variable (no "CXX" appears when I run the shell command "env", and "echo $CXX" returns a blank line. So where's the g++ value coming from. Is this just built into Gnu Make, or is there a configuration file for make somewhere?
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Dec 7, 2010
I am trying to insall CPAN, apparently I do this by typing CPAN at the command line.After much else, this results in
Code:
**UNRECOVERABLE ERROR**
Could not find gdlib-config in the search path. Please install libgd 2.0.28 or higher.
If you want to try to compile anyway, please rerun this script with the option --ignore_missing_gd.
Warning: No success on command[/usr/bin/perl Makefile.PL INSTALLDIRS=site]
[code]....
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Jun 25, 2011
I am new to automake. When running automake command, there is an error "cannot open > py/Makefile.in: No such file or directory". How to create that file? And, what is that file for?
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Apr 10, 2011
If I would normal compile using the following line:
Code:
Where should those library flags go in a makefile? Say I having the following makefile:
Code:
all: ${PROGS}
clean:
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Oct 4, 2010
I am trying to use a software package written in ANSI C. It has a makefile which has to be executed first.
As soon as I execute it I get messages like: line i: command not found.
Commands for which I am getting errors :
CC = /usr/bin/gcc
GCCFLAGS = -c -Wall
ROOTDIR = .
My gcc compiler is located in the above directory only. In ROOTDIR also I tried giving the path in which all the required files & folders are present but still I get the command not found error in all the lines.
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Apr 26, 2010
I created a quick makefile with the following lines:
Code:
$(BINARY):
echo "----- Linking $(BINARY)----"
gcc -m32 -g src/* -Iinclude -I$(HOME)/include -I$(HOME)/include2 -D_LINUX -DSYSV -DPOSIX -L$(HOME)/shared/lib32 -lidlib -lid2lib -o bin/sampleapp
echo "---- done ----"
It builds fine when I build from the command line ( make -f sample.mk).
However, it does not build when building from eclipse (which essentially calling the same makefile). The make output shows exactly the same as what I got from the command line build, except the last line showing
Code:
collect2: cannot find 'ld'
make: *** [sampleapp] Error 1
I am not sure why it tries to call "ld" when building from eclipse.
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Jun 19, 2010
I'd like to write a Makefile for my CUDA/C++ code but I didn't know how things work with CUDA, I mean there is a nvcc compiler but I don't know what I've got to do with this.
Do I have to firstly run nvcc and then g++ or only nvcc to compile my CUDA/C++ code ? I found nothing on the web explaining such basic things .
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Apr 5, 2011
So I have been trying for 8 hours to try to get the index of an element from a list in a Makefile. The problem is that after I get the index using all the methods I have tried, the index cant be used in the "word" function:
for instance:
$(OUTPUT2) : INDEX = $(shell echo $(OUTPUT2) | sed -r -e "s/[ ]+/
/g" | grep -n $@ | sed 's/^([0-9]*):.*/1/')
will create a variable INDEX defined specifically for each member of OUTPUT2, so that each output knows its index. Unfortunately, when I pass this $(INDEX) into word, it doesn't work:
$(OUTPUT2) : $(word $(INDEX), $(INPUT1)) $(word $(INDEX), $(INPUT2))
echo $(INAME) $(TMPBASE) $@
and I get the error:
Makefile:16: *** non-numeric first argument to `word' function: 'num'. Stop.
I feel like if I could just convert a string to a Makefile acceptable number this would just work....
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Mar 13, 2009
im trying to write a makefile which contains :two cpp files and two header files. now i've put cppfiles in a folder called source whose path is: /root/workspace/source and header files in a folder called header whose path is:
/root/workspace/makedemo/header
my makefile is in the path:/root/workspace/makedemo my makefile was like this:
Code:
HEADERS = $(shell /root/workspace/makedemo/header ls *.h)
SOURCES = $(shell /root/workspace/source ls *.cpp)
COMPILERFLAGS = -W -Wall
DEBUGFLAGS = -g
[code].....
im sure that i've given the correct path but it is showing errors like this:
[root@localhost makedemo]# make
/bin/sh: /root/workspace/source: is a directory
/bin/sh: /root/workspace/source: is a directory
g++ -W -Wall -I. -o output
g++: no input files
make: *** [output] Error 1
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May 17, 2011
I know how to manually writing a makefile for my project, but I am new in using makefile & configure file generation tools like automake to generate a makefile and a configure script file.
I had done research on tutorials for generating makefile and configure script file.
I know that I need to manually write two files (makefile.am and configure.in).
I use wxWidgets GUI library, libconfig library, and libpcap library to do my project.
wx-config is a tool that can return the library files and include directory for wxWidgets library.
When using g++ to compile my files, I need to add in this line "`/wxlib/bin/wx-config --version=2.9 --static=yes --unicode=yes --debug=yes --libs`"
How to add that line to the makefile.am file?
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Jun 8, 2011
I'm trying to make recursive makefile work but it's giving me two problems. I have a top folder with the main Makefile and one Makefile for each sub folder 'one' and 'two'. Makefile in subfolder 'one' and 'two' are identical. The top Makefile (still a bit messy) looking like this:
Code:
# Directories
CC = gcc
CFLAGS = -Wall -Wextra
TARGET_DIR = bin
MAIN_FILE = one.c
[Code]...
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Mar 4, 2010
I've been trying to work out a way to stop chunks of code being compiled using a variable in my makefile but can't work it out. What I mean is for example in my code I might have.
/****output comms portdata********/
printf("
debug comms port %d",ReadPort("ttys1);
I only wish this code to be compiled when I'm debugging. What I've tried is using #ifdef with
#ifdef COMM_PORT_DEBUG
printf("
debug comms port %d",ReadPort("ttys1);
#endif
Then in my make file I set COMM_PORT_DEBUG to 1 so
DEBUG_DEFS = COMM_PORT_DEBUG=1
I then thought I could put it into my in my link line
all: $(CC) $(CPFLAGS) $(DEBUG_DEFS) $(INC_PATHS) $(SOURCE) -o $(PROGRAM) $(LIB_DIRS) $(GAME_LIBS)
but this gives a
gcc: COMM_PORT_DEBUG=1: No such file or directory
is there a way to do this sort of thing? Or am I barking up the wrong tree?
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May 12, 2011
I've just started using gdb at my new job, and I'm having a small issue debugging C++ with it. After I execute "continue" or "run" through gdb, I'm not able to return control to gdb. Based on the documentation I read, I should be able to use Control-C to interrupt the program, and have control return to gdb.
This does not work on my setup. Not sure if it's related, but I'm debugging on a remote machine. I tried through PuTTY and xterm using Exceed XServer. In both cases, gdb does not respond to Control-C. This is quite annoying because I have to restart my program every time I want to set a breakpoint.
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